Irving a



(N0 Model.)

I. A. KILMER. ROD ROLLING MILL.

. Patented June 24, 1890.

INH In u H HHIHIHUNNNH; L

Ji; j;

ll l] Il Il fllll H Nll Mll Il II [LH (I u. l Il Il IF Il Il Il Il I] IlH l {ulllml nlllml me Hemmingen; qui., nwrrumo.. wnsnms'mu, n. z:y

f UNITED STATESr PATENT 'N OFFICE..`

IRVING A. KILMER, OF NEW WINDSOR, NEV YORK, ASSIGNOR TO THF. KILMERMANUFACTURING COMPANY, OF SAME PLACE.

ROD-ROLLING MILL.

SPECIFICATION forming part of Letters Patent No. 430,998, dated June 24,1890.

.Application iled March 3, 1890. Serial No. 342,357. (No model.)

To a/ZZ whom it may concern.-

Be it known that I, IRvINe. A. KILMER, a citizen of the United States,residing at New Vindsor, in the county of Orange, State of New York,have invented certain new and useful Improvements in Rod-Rolling Mills lor Plants, of which the following` is a specification, reference being'had therein to the accompanying drawings.

This invention has relation to a rolling? mill plant for reducing abloomor billet t-o a rod by one continuous operat-ion and at a singleheat; and the objects vand advantages` of the invention will appear inthe following description, and the novel features thereof. will beparticularly pointed out in the claims. v Referring to the drawings,Figure l is a.

The plant comprises four series or trains of rolls, consisting of abillet-train A, a side train B, and a by-lapping pair of rod-trains Cand D. The billet-train A has arranged in convenient proximity theretothe bloom or billet furnace A', and consists of a three-high set ofrolls A2, which are suitably connected and arranged in line with adesired number of co-operating reducing-rolls A3 and A4. This trainperforms its usual function of reducing a billet to a size which adaptsit to be operated upon by the rod-train of a mill. The means which areemployed in this invention for such a reduction of the reduced billetare what are herein designated as a side train B. Any suitable straightguide B is interposed between the billet-train A and the side train B,and a similar guide B2 serves to conduct the billet which has beenreduced from the side train B to the iirst set of rolls of the section Cof the rod-train proper. The side train is located at such a distancefrom the billet-train that not only is sufficient room provided for theworking 0f a catcher to return the leading end of the reduced billet toanother set of rolls in the billet-train, but to permit of the controlby the side train of the lslack or surplus, or even in some instances ofthe lack of a certain degree of length in the product issuing from thebillet-train.

As is usual in rolling-mill plants, the several sections of the plantare run at increased speeds from the billet-train to the rod-train. Inthis instance separate engines or motors are employed for separatesections of the plant. The engine l is geared directly with the sidetrain B, and by means of pulleys and belts with thel billet-train A,while the engine 2 is by means of the belts and pulleys shown geareddirectly with the two sections C D of the rod-train. As is usual in theart, the gearing connecting the engines with the several sections isproportioned so as to give the desired gradual increase of speed in therolling action of each section progressively from the billet-train.

Now, it will be seen that by placing the side train at a predetermineddistance from the billet-train and from the first section C of therod-train there is opportunity for an overfeed of material from thebillet-train to the side train, and from the latter to the first sectionof the rod-train, and there is also an opportunity of producing a slightstretching of the material in case of an underfeed thereof from eitherthe billet or side train. `The occurrence of an underfeed is liable tobe some- -What rare, but whenever it exists the result is merely a veryslight reduction in the area of the cross-section of the material, whichis more advantageous than otherwise to the remaining process of bringingthe same to rod size.

The relative arrangement of the several trains is such as to producealternately crosssections of square and oval and a final circularcross-section, as indicated in the drawings, and wherever the materialemerges from the rolls with a square cross sectionV curved guides orrepeaters E may be employed, and thus the services of a catcher aresaved at each of these points in the plant. At other points-that is,where the rod emerges in oval cross-section-catchers are employed togive a rod the usual quarter-turn upon introducing it into the next pairof rolls in a train.

By overlapping the sections C and D of the rod-train a straight guide Fmay be employed, thereby dispensing with the services of a IOO catcherat that point, and the .further advantage is secured of a contraction ofthe floorspace required for the plant. It is of course apparent that thenumber of pairs or sets of .rolls in each train may be increased, asdesired, to produce a desired reduction of a billet, or, in other Words,to effect the production of a rod of a desired size.

Heretofore there have been different arrangements of billet and rodtrains With or without the interposition of an intermediate trainarranged between lthe billet and rod train and in feed-line Withboth-that is, so that the last rolls of one train would feed directlyinto the rst rolls of a subsequent train in the plant, and heretofore,also, a system of rolls having the several functions of billet androd-reducing rolls have been arranged to conjointly and continuouslyoperate to produce rods from billets; but I am not aware of anarrangement which simultaneously and in. the manner hereinbeforedescribed provides for an overfeed or an underfeed, and for the samereduction in the number of catchers required to operate the plant, as isprovided in the invention herein set forth.

What is claimed is- 1. A plant for rolling billets to rods, comprisin ga billet-train, a side train arranged at a distance therefrom andoverlapping at one end only, and an intermediate rod-train inoverlapping sections, substantially as described. f

2. In a rod-mill plant, a billet-train, a side train arranged at adistance therefrom and overlapping the same, and an intermediaterod-train in sections, having overlapping terminals, With one end of thetrain overlapping the side train, substantially as described.

3. In a rod-mill plant, a billet-train, a side train, and anintermediate rod-train With one vterminal overlapping the side train andthe other terminal outside the limit thereof, substantially asdescribed.

4. Ina rod-mill plant, a billet-train having supplementalreducing-rolls, a side train overlapping the saine and arranged at adistance therefrom, and a rod-train in overlapping sections With bothsections between the billet and side train, with one terminaloverlapping the side train, substantially as described.

5. In a rodlmill plant, a billet-train, a side train arranged at adistance therefrom, a straight guide between the two, an intermediaterod-train in overlapping sections With one terminal overlapping theterminal of the side train, and a straight guide from the side train tothe nearest overlapping terminal of the rod-train, substantially asdescribed.

6. In a rod-mill plant, a billet-train, an overlapping side trainarranged at a distance from the billet-train, an overlapping section ofa rod-train, arranged at a distance from said side train and nearer thebillet-train, and an overlapping final section of a rod-train, arrangednear its first section, and means for rotating the billet, side, andsectional rod trains at progressively increased'velocities,substantially as specified.

7. In a rod-mill plant, a billet-train, a side train arranged at adistance therefrom and overlapping the same, and an intermediaterod-train in overlapping sections, with the iirst section nearest thebillet-train and overlapping the side train, and the final sectionoutside the limit of the side train, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

IRVING A. KILMER.

Witnesses:

WILLIAM O. KILMER, E. B. STooKINe.

